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Finding the Fourth Proportional to 8,398.62, 11,588.13 and 7,059.32

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Solution

The fourth proportional to 8,398.62, 11,588.13 and 7,059.32 is: 9,740.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,398.62 : 11,588.13 = 7,059.32 : x
  2. Step 2: Convert to fraction form
    8,398.62/11,588.13 = 7,059.32/x
  3. Step 3: Cross multiply
    8,398.62x = 11,588.13 × 7,059.32
  4. Step 4: Simplify right side
    8,398.62x = 81,804,317.87
  5. Step 5: Solve for x
    x = 81,804,317.87/8,398.62
  6. Step 6: Final answer
    x = 9,740.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.